WAEC - Physics (2021 - No. 25)
The sketched graph above represents a progressive wave moving from the left to the right. The period of the wave is 0.125s.
Determine the values of the amplitude and wavelength, respectively, of the wave.
8 cm; 27 cm
8 cm; 9 cm
4 cm; 9 cm
16 cm; 27 cm
คำอธิบาย
Amplitude = 16cm/2 = 8cm ( displacement from mean position)
3\(\lambda\) = 27cm
\(\lambda\) = \(\frac{27}{3}\) = 9cm
Therefore, amplitude(A) = 8cm and \(\lambda\) = 9cm